
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X60-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 60mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ40X60-30SB is a double-acting JIS compact cylinder featuring a 40 mm bore and a 60 mm full stroke. It includes an external M12x1.25 threaded stop with a lock nut on the rod-end side, allowing you to fine-tune the extend end position on the machine without swapping parts. The usable extend range spans 30 mm up to the full 60 mm, while the retract stroke remains completely unaffected. Because the internal piston area stays constant, output force is identical to a standard ACQ of this size.
This model delivers 628.3 N of push force and 527.8 N of pull force at 0.5 MPa, peaking at 128 kgf under 1.0 MPa. It comes equipped with a male M14x1.5 piston rod end (-B) for direct load coupling and a built-in magnet (-S) for position sensing. The unit uses fixed elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. For fail-safe load holding during air loss, incorporate an external rod lock or pilot-operated check valve, as the bumper alone will not prevent drift.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X60-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 60 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Rod thread | M8×1.25 (F) / M14×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×60 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Dial in exact clamping reach on CNC machining centers during new product changeovers without disassembling the pneumatic line.
Modify the extend endpoint on packaging line sealing heads to accommodate varying box heights on the fly.
Establish precise trial end positions for pressing sub-components in automated assembly machinery before locking the nut.
When sizing this 40 mm bore actuator, consider the neighboring standard ACQ options: stepping down to a 32 mm bore yields 402.1 N push at 0.5 MPa, while stepping up to a 50 mm bore provides 981.8 N. If your equipment never requires stroke length changes, a fixed-stroke ACQ cylinder is sufficient. To order this unit correctly, confirm the 40 mm bore, 60 mm full stroke, 30 mm adjustable window, the -S magnet for electronic or reed switches, and the -B male rod thread.
Quick checklist
The usable extend range is 30 to 60 mm (a 60 mm full stroke minus a 30 mm window). Force remains identical to a standard ACQ bore: 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
The M12x1.25 external threaded stop and lock nut limit only the extend length; the retract stroke is unaffected. The adjuster changes stroke length only, leaving piston area and force unchanged. The cylinder relies on fixed elastomer bumpers for deceleration, and the built-in -S magnet is compatible with both reed and solid-state electronic switches.
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